层上单元格中具有外围粗糙度的圆极化法布里珀罗腔天线

Sagar Jain, S. S. Ram
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引用次数: 1

摘要

与其他高增益平面天线相比,法布里-佩罗腔(FPC)天线因其降低了制造复杂性和成本而得到了广泛的研究和发展。近年来,FPC天线的部分反射面(PRS)被设计成具有理想电磁性能的超表面,以减小其外形尺寸。这些表面通常由一组精心设计的单晶片组成,以获得高带宽或所需的偏振。在本文中,我们考虑了一个具有对角线的矩形环路的单位电池设计-目标是实现圆极化。然后,我们引入了一个新的设计参数,其形式是每个单元格边缘的外围粗糙度。我们证明,在单元格中加入新的设计特性可以将回波损耗带宽提高到202.8 MHz(8.9%),增益提高到9.5 dBi,轴向比降低到4.8dB。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Circularly Polarized Fabry Perot Cavity Antennas with Peripheral Roughness in Superstrate Unit Cells
Fabry Perot cavity (FPC) antennas have been extensively researched and developed for their reduced fabrication complexity and cost as compared to other high gain planar antennas. Recently, the partially reflecting surfaces (PRS) of the FPC antennas have been engineered with metasurfaces with desirable electromagnetic properties in order to reduce their profile dimensions. These surfaces usually consist of an array of unit cells that are skillfully designed in order to obtain high bandwidth or desired polarization. In this paper, we have considered a unit cell design of a rectangular loop with a diagonal - with an objective of achieving circular polarization. Then we introduced a new design parameter in the form of peripheral roughness in the edge of each of the unit cells. We demonstrate that the incorporation of the new design feature in the unit cell results in an enhancement of the return loss bandwidth to 202.8 MHz (8.9%) and gain to 9.5 dBi along with a reduced axial ratio of 4.8dB.
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